Forget the typical red and pink to sweeten up the most romantic day of the year. For the Duchess of Cambridge, it's all about blue. PHOTOS: Kate Middleton's Many Royal Looks Kate Middleton made a grand appearance in a bold, cerulean dress that perfectly enhances her slender figure. Did we mention she gave birth to Prince George nearly a year ago? PHOTOS: Kate Middleton Flashes Flat Stomach During Volleyball Event US Magazine is reporting that Middleton chose to celebrate Valentine’s Day the royal way: Attending the official opening of the ICAP Art Room at Northolt High School in Ealing, London. READ: Queen Tells Kate To Wear Longer Skirts “She looked slim in her LK Bennett ‘Detroit’ dress, which had elbow-length sleeves and a square collar,” says the publication. “A Cartier Ballon Bleu watch, Kiki McDonough amethyst and diamond earrings, and a simple black clutch completed the look.” PHOTOS: Kate Middleton Enjoys a Glamorous Night Out for Charity It’s no wonder the giant group of students erupted in cheers and applause upon Middleton’s arrival. The ICAP Art Room plans to offer art therapy to life-challenged children between the ages of 5-16. Middleton has been a Royal Patron of the national charity since 2012. As expected, the 32-year-old has been stirring headlines lately. Earlier this week, Middleton attended her first engagement of 2014 with some major diamonds that would have made Elizabeth Taylor blush. While she didn’t choose a dress by her go-to designer Jenny Packham this time around, Middleton looks as gorgeously chic as ever. PHOTOS: Kate Middleton Takes a Sparkly Step Back Into Spotlight See the photos for yourself below.